Adjustable limit-pin gauge



July 19, 1927.

E. H. ALDEBORGH ADJUSTABLE LIMIT PIN GAUGE Filed Jan. 13. 1927 /NVENTOR ERiQM/bussonqu A TTORNEV Patented July 19, 1927.

UNITED STATES PATENT ePrice-1 ERIK H. ALDEBORGH, OF POUGHKEEPSIE, NEW YORK, `ASSIGNOR TO STANDARD GAGE C0., ING., F POUGHKEEPSIE, NEW YORK, A CORPORATION 0F NEW YORK.

ADJUSTABLE LIMIT-PIN GAUGE.

This invention relates to an 'adjustable limit pin gauge, of that class which is employed for the close measurement or checking of internal dimensions during the manu? facture of a quantity of like parts, and where the limits of the measurement are held within fiXed limits to what is known as go and a cno go dimension. v

While this class of measurement is common in that kind of gauges known as snap gauges, which are either formed with four pins or contact surfaces, which provide the two dimensions, or one contact surface which is common to both of the pins providing the l5 two different dimensions.

It has not been possible to provide two different dimensions in one pin gauge, and it has required two separate pin gauges, one for the go and another for the no go.

The object of the present invention is to provide a limit pin gauge, which shall in the one tool provide two separate measurements.

Another object being to provide means for quickly distinguishing between the two dimensions, both by sight and touch.

Still another object being to provide a gauge of this class that shall be simple, contain few parts, and be durable and eficient.

lith these and other objects in view, my

so invention consists in certain novel construction and combination of parts as will hereinafter be fully described and claimed, and illustrated in the accompanying drawings which forma part hereof and in which like figures of reference refer to corresponding arts in all of the views, and it is to be ifully understood that slight changes may be made without departing from the spirit of the invention.

Figure 1 is a front elevation of a gauge in which is embodied my invention.

Figure 2 is a vertical longitudinal sectional view showing the construction.

Figure 3 is an end view of the gauge looking at the single permanent pin.

Figure 4 is an end view of the gauge, looking at the two adjustable pins.

Figure 5 is a cross sectional view taken on the line A-A of Figure 1, in the direction of the arrows.

Referring to the drawings, the construction of the body and permanent end or pin, will require only a brief description, as this is the subject matter of another patent application, filed Oct. 4, 1926, Serial No. 139,- 566 and also the method employed for the adjustment and locking of. the adjustable pins, will 're uire only ay brief description as this is '(fully described and claimed in the U. S. Patent No. 1,574,735 issued on Feb. 23, 1926, tov J. B. Poloski, and assigned to Ford Motor Company, of `Detroit, Mich., who have licensed the use of the same to the Standard Gage Co., Inc., ofl Poughkeepsie, N. Y., to vwhom applicant has assigned his interest in this invention.

' As herewith shown, the device comprises a body portion 1, of steel vor, other suitable material and tubular in form withl open ends. f

In one end thereofr is pressed or otherwise secured the shank 2 of the stationary plug or pin which is formed with the collar or fiange 3 of the same diameter as the outside diameter of the body 1, against the end of which it is abutted; while the outer or pin portion 5 of the plug is of smaller diameter, and is formed with the rounded end 4, which may be hardened, ground and lapped.

On this pin portion 5 is provided a finger piece 6 of -insulating material, not only to provide a finger grip but to protect the gauge as well.

The tubular body portion 1, is also protected with a finger grip or sleeve 7, of insulating material, which not only affords a grip by which the gauge is handled, but keeps the heat of the operators hand from the body of the gauge.

The other or adjustable end of the gauge comprises a. T-shaped head 8 which is formed with the shank 9 which is pressed or otherwise secured in the end of the body 1.

Said head 8 as will be seen by Figure 4, is rectangular and is provided with two adjustable pins 10 and 11, which are mounted in the parallel orifices 12 formed in said head 8 in parallel relation to the shank 9, and which are formed with the threaded portion 13, into which are threaded the set screws 14.

The pins 10 and 11 are formed with the flatted portions 15, which coact with the flatted portion 16 of the taper nuts 17 which are mounted in said head 8 in transverse relation to said pins and which are locked and drawn tight by the screws 18, all of which will be fully understood by reference to Patent No. 1,574,735.

' either by sight or touch, I have provided the surface of the head 8, adjacent to the pin l0 (no go) with a groove 2l, which is provided with paint or enamel of a contrasting c color such as red, that will be seen, while the groove will be felt by the operator, both indicating danger.

` Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is.

1. An adjustable limit pin gauge, Vcomprising in combination with a tubular body portion having a stationaryV gauging pin mounted in one end thereof, of a head carried by the other end, said head provided with an adjustable go pin and an adjustable no go pin, each of which forms a predetermined dimension with the stationary pin.

'2. In a limitpin gauge oi' the class described, and in combination with a tubular handle having one fixed gauge .pin and two adjustable gauge pins, forming two dilierent i v said dimensions.

3. An adjustable limit pin gauge, comprising in combination with a tubular body portion having a stationary gauging pin mounted in one end thereof', of `a T-shaped head secured in the other end thereof, said head provided with two adjustable gauging pins, in parallel relation with eaeli other and said body portion.

4. An adjustable limit internal pin gauge, comprising in combination with a tubular body portion having a stationary gauging pin securedin oneend thereof, of a T-sliaped member secured in the other end thereof, Y

two adjustable gauging pins mounted in said head in parallel relation to each other and to said body portion, one side of said vhead formed with an indicating groove to distinguish between said adjustable gauging pins.

In testimony whereof I hereunto aHiX my signature. j ERIK H. ALDEBORGIIL 

